然后调用rcu_sched_clock_irq函数,处理与RCU调度相关的时钟中断,同样根据user_tick参数确定是用户时间还是系统时间。 在定义了CONFIG_IRQ_WORK宏的情况下,如果当前处于中断上下文(in_irq函数返回真),则调用irq_work_tick函数,处理IRQ工作。紧接着调用scheduler_tick函数,执行调度器的时钟滴答处理。最后,如果启用了CONFIG...
tick_sched_timer ->tick_sched_handle ->update_process_times /*旧名字叫rcu_check_callbacks*/ ->rcu_sched_clock_irq //用来判断是否度过宽限期,若已经度过则触发RCU软中断 ->rcu_flavor_sched_clock_irq //当前cpu的三种qs情况处理,作用类似于schedule函数中的rcu_note_context_switch 1.仍处于rcu读临界...
[ 59.816120] rcu_sched_clock_irq+0x5f0/0xe64 [ 59.820413] update_process_times+0x6c/0xb0 [ 59.824618] tick_sched_handle+0x38/0x74 [ 59.828560] tick_sched_timer+0x58/0xb0 [ 59.832413] __hrtimer_run_queues+0x18c/0x3cc [ 59.836791] hrtimer_interrupt+0xf4/0x29c [ 59.840823] arch_time...
调用。 如下图所示,此调用可以由调度时钟中断(左侧的``rcu_sched_clock_irq()``)或空闲条目(右侧的``rcu_cleanup_after_idle()``)触发,但仅适用于使用 ``CONFIG_RCU_FAST_NO_HZ=y`` 构建的内核)。 无论哪种方式,都会引发 ``RCU_SOFTIRQ``,这会导致 ``rcu_do_batch()`` 调用回调,这反过来又允许...
lapic_can_unplug_cpu.cold.30+0x43/0x43 [1106212.643986] nmi_trigger_cpumask_backtrace+0xe9/0xee [1106212.644344] rcu_dump_cpu_stacks+0xc8/0xfc [1106212.644698] rcu_sched_clock_irq.cold.101+0xde/0x215 [1106212.645054] ? tick_sched_do_timer+0x50/0x50 [1106212.645409] ? tick_sched_do_...
(). As shown in the diagram below, this invocation can be triggered by the scheduling-clock interrupt (rcu_sched_clock_irq() on the left) or by idle entry (rcu_cleanup_after_idle() on the right, but only for kernels build with CONFIG_RCU_FAST_NO_HZ=y). Either way, RCU_SOFTIRQ ...
* be called from hardirq context. It is normally called from the * scheduling-clock interrupt. */voidrcu_check_callbacks(intuser){ RCU_TRACE(check_cpu_stalls());if(user || rcu_is_cpu_rrupt_from_idle()) {rcu_sched_qs(); }elseif(!in_softirq()) { ...
RK3588 NVR版本SDK编译的kernel出现rcu: INFO: rcu_sched detected stalls on CPUs/tasks问题。使用百度...
[ 942.402943] Hardware name: HPE ProLiant XL675d Gen10 Plus/ProLiant XL675d Gen10 Plus, BIOS A47 02/23/2021 [ 942.518252] Call Trace: [ 942.547614] <IRQ> [ 942.571741] dump_stack+0x5c/0x80 [ 942.611588] panic+0xe7/0x2a9 [ 942.647247] rcu_sched_clock_irq.cold.92+0x266/0x3d3 [ ...
Hi All, Our board is LS1043 + 512MB DDR3L, we meet the problem reboot randomly. Any help is greatly appreciated. We had disabled watchdog first,